802.1X AP supplicant credentials have been enabled and configured on a Cisco WLC v7.0 in both the respective Wireless>AP>Global Configuration location and AP>Credentials tab locations. What describes the 802.1X AP authentication process when connected via Ethernet to a switch?

A.
Only WLC AP global credentials are used.

B.
Only AP credentials are used.

C.
WLC global AP credentials are used first; upon failure, the AP credentials are used.

D.
AP credentials are used first; upon failure, the WLC global credentials are used.

Explanation: